RCS2012F1783CS Equivalent & Substitute Parts

Part Overview

The RCS2012F1783CS is a 178 kOhms ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status and is designed for general-purpose applications requiring anti-sulfur and moisture-resistant characteristics. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value
Resistance	178 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Packaging Type	Tape & Reel (TR)

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012F1783CS is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Resistance value (178 kOhms), tolerance (±1%), power rating (0.125W), and temperature coefficient (±100ppm/°C) must match exactly.

Mechanical Compatibility: Package designation (0805 / 2012 Metric), physical dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm), and termination count (2) must be identical.

Environmental & Compliance: Operating temperature range (-55°C ~ 155°C), Moisture Sensitivity Level (MSL 1), RoHS3 compliance, and REACH status must align.

Composition & Construction: Thick film composition is required for all substitutes.

All four substitute parts listed below satisfy these criteria and are therefore electrically and mechanically interchangeable with the RCS2012F1783CS.

Parameter Comparison

Parameter	RCS2012F1783CS (Samsung)	CRCW0805178KFKEA (Vishay Dale)	ERJ-6ENF1783V (Panasonic)	RC0805FR-07178KL (YAGEO)	RMCF0805FT178K (Stackpole)
Resistance	178 kOhms	178 kOhms	178 kOhms	178 kOhms	178 kOhms
Tolerance	±1%	±1%	±1%	±1%	±1%
Power Rating	0.125W	0.125W	0.125W	0.125W	0.125W
Package / Case	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Height - Seated (Max)	0.026" (0.66mm)	0.020" (0.50mm)	0.028" (0.70mm)	0.024" (0.60mm)	0.026" (0.65mm)
Packaging Type	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

All four substitute parts are Active product status components with full RoHS3 compliance and REACH unaffected status, matching the regulatory posture of the RCS2012F1783CS.

CRCW0805178KFKEA (Vishay Dale): Automotive AEC-Q200 rated. Seated height 0.020" (0.50mm), the lowest profile among substitutes. Suitable for space-constrained applications requiring automotive-grade reliability.

ERJ-6ENF1783V (Panasonic Electronic Components): Automotive AEC-Q200 rated. Seated height 0.028" (0.70mm), the highest profile. Highest inventory availability (40,190 pcs). Appropriate for general industrial and automotive applications.

RC0805FR-07178KL (YAGEO): Moisture-resistant thick film construction without automotive certification. Seated height 0.024" (0.60mm). Highest inventory availability (56,017 pcs). Suitable for consumer and industrial applications where AEC-Q200 is not required.

RMCF0805FT178K (Stackpole Electronics Inc): Automotive AEC-Q200 rated. Seated height 0.026" (0.65mm), matching the original RCS2012F1783CS. Highest inventory availability (100,883 pcs). Direct dimensional equivalent with automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can CRCW0805178KFKEA replace RCS2012F1783CS in all applications?

A: Yes, provided PCB layout accommodates the lower seated height of 0.020" (0.50mm) versus the original 0.026" (0.66mm). All electrical and environmental specifications are equivalent.

Q: What is the significance of AEC-Q200 rating on substitute parts?

A: AEC-Q200 is an automotive qualification standard. CRCW0805178KFKEA, ERJ-6ENF1783V, and RMCF0805FT178K carry this certification. The original RCS2012F1783CS does not. AEC-Q200 parts are suitable for automotive applications; non-AEC-Q200 parts are not restricted to non-automotive use but lack automotive qualification documentation.

Q: Are height differences between substitutes significant?

A: Height variations range from 0.020" to 0.028" (0.50mm to 0.70mm). These differences are within typical PCB assembly tolerances but should be verified against specific PCB design constraints, particularly in high-density layouts or applications with height restrictions.

Q: Do all substitutes have identical moisture sensitivity?

A: Yes. All parts, including the original RCS2012F1783CS, carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Which substitute offers the best inventory availability?

A: RMCF0805FT178K (Stackpole Electronics Inc) has the highest inventory at 100,883 pcs, followed by RC0805FR-07178KL (YAGEO) at 56,017 pcs.

Q: Is the original RCS2012F1783CS still available?

A: Yes. Current inventory is 1,040 pcs with Active product status. However, substitute parts offer significantly higher stock levels.

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